Socket



July 23, 1929. p scuggg 1,721,9'

SOCKET Filed March 25, 1925 k 2 INVENTOR ATTRNEY Patented July 23, 1929.

UNITED STATES PATENT. OFFICE.

Emmo rascucox, or- CORNING, NEw YORK, ASSIGNOR T coENINo GLASS woExs or GORNING, NEW YORK, A CORPORATION OF NEw YORK.

SOCKER.

' Application filed March as, 1925. Serial No. 18,150.

This invention relates to the art of electrical sockets, and more particularly to vacu-' um tube sockets.

- It is an object of this invention to provide an improved vacuum tube socket which is particularly adapted for radio uses.

It is also an object of this invention to provide a socket'which has permanent high insulating qualities and is unaffected by heat,

1 light and moisture, and is therefore adapted to cut down power losses, prevent short circuits, and eliminate radio frequency leakage and the so-called tube noises.

It is a further object of this invention to incorporate in said socket new and improved electrical connections.

With the above and other objects in View,

which will be apparent as the description proceeds, I have disclosed my invention in the following specification, taken in connection with the accompanying drawings, in which: Fig. 1 is a perspective view of my improved socket;

Fig. 2 is a Vertical section on the line 2--2 of Figs. 4 and 5;

Fig. 3 is a vertical section on the line 3-3 of Figs. 4 and 5;

Fig. 4 is a top plan view; and

Fig. 5is a bottom plan view.

Owing to the high frequencies used in radio communication, it is essential, if the best operation of radio apparatus is to be secured, that the insulators which are utilized be as nearly perfect insulators as possible, and that they be free from surface condensation,

strong, and unaffected by heat, light and moisture. It is well known that many of the so-called insulating materials now on the market, such as porcelain, ordinary glasses, fibre, rubber and its derivative products, and phenolic condensation products, do not possess these qualities. By careful investigation, however, it has been demonstrated that low expansion barosilicate lass, of thetype disclosed in United States etters Patent Number 1,304,623, granted May 27, 1919, to E. O. Sullivan and W. C. Taylor, forms an ideal insulatingmaterial for radio purposes.

The use of glasses of this type for radio pur oses is not, however, claimed specifically in t isa plication, inasmuch as this is the subject 0 a co-pending application, by Albert present application is the'result of an ex-.

tended investi ation in order to develop. a construction wiich can'be so manufactured and which, at the same time, is capable of receiving and securely holding the necessary metal fittings.

In the accompanylng drawings, 10 designa' s my improved socket as a whole. This Consists of the insulator 11, which is preferably of the glass referred to above, a tubular member 12 to receive a vacuum tube, and a plurality of electrical contacts 13, .bushings 14, and screws 15. Parts 12, 13, 14 and 15 are preferably made of brass, although copper or other suitable materials can be utilized therefor.

As indicated herein, the insulator 11 con sists of a body portion 16, provided with a plurality of laterally extending projections 17, 18, 21. 22,23 and 24, a downwardly ex tending flange 25, which is interrupted in order to form a series of separate and downwardly tapering flanges 26, 27, 28, 29, 30 and 31, and an upwardly extending flange 32. Each of the projecting portions. 17 18, 21, 22,

23 and 24 is provided with a recess 33, the recesses in projections 17 and 18 being adapted to provide means for the convenient attachment of the socket to the panel or base (not shown), and the recesses in projections 21, 22, 23 and 24 being adapted to receive bushings 14.- As indicated in Figs. 1 and 4, the upper surface of each of the projections 21, 22, 23 and 24 is provided with a countersunk V-shaped recess 34.

As best shown in Fig. 3, the bushings are of a circular cross-section which is smaller than the cross-sectional area of the surrounding recesses 33, and, as indicated in Figs. 1, 3 and 4, each of the bushings 14 is provided with an integral square head 35, the latter cooperating with the V-shaped recesses 34 to form a simple and effective means of preventpass to-avoid the necessity of causing an unrecesses after insertecl'in the insulator. .50

' due compression on the cure the contacts 13 to the bushings.

tact 13 consists of a- This'fiange forms arm 38 is integral and liesat substantially 'a cured in the insulator I have herein shown it As best shown in Figs. 3 and 5, each conmetal, which has to lie adjacent to portion 16 of the lying in a plane a flat portionj36, adapted insulator, and a-flange 37 at right angles therewith. one-arm of a V, whose other angle therewith, in order to betangentially disposed to and advantageously cooperate with the terminals of a vacuum tube (not shown) and form a wiping contact therewith. The extreme free end of each contact is preferably made slightly concave at the point where it is desired to retain the vacuum tube terminal. .The fiat portion of each contact is preferably made of the same dimensions as the spaces between flanges 26 and 27, 28 and 29, 29 and 30, and 31 and 26, atthe points where they join the body portion. 16. As shown in Fig-5, the outer end of each flat'portion 36 is preferably formed with projecting ears40 and 41 which are adapted to bear against the outer portions of flanges 26, 27, conjunction with the flat portions any lateral movement of the contacts with respect to the socket. v y

The tubular member 12, whichisprovided with the usual bayonet joint 42, maybe se-' 28, 29, 30, and '31, and, in the body portion 16 and cumferential to cooperate the flange 32.

projection 43 which is adapted with a slight recess formed in of the insulator, thus limiting it descent therein. The body portion. 16 of the insulator is provided with a plurality of recesses 44, preferably two, spaced 180 apart as indicated in Figs. 2 and 5, and a drop of solder the tubular member has been This solder adheres to the member 12 and glass in order to se-.

single piece of spring the underside ofthebody .b

ber 12.

36 ofcontacts 13, preventi either integral with in various ways, and

provided with a cirof an insulator of depending peripheral-flanges and elec- H trical contacts, each of the latter comprising 46 is placed in each of these"- limits movement with respect to the insulator in one di-- re'ction, the pro ection 43 limiting its movement in the opposite direction.

:From the foregoing evident that, when assembled, the member 12 is rigidly internal threads 45 (Fig. 3) with ushings are provided, any twisting move ment being prevented by the engagement of the sides and with the interrupted fianges26, 27, 28,- 29, 30.and31. I

The latter serve the additional purpose-of maintaining all of the contacts, except projecting portions (not shown) provided for the attachment wires, wholly within the outline of the insulator. As indicated herein, the upper end of each threaded bushing 14 forms a convendescription it will be '55 positioned within the insulator, and the contacts 13 are firmly securedto the bushings 14 by the screws 15, which engage which the L projecting ears of the contacts which may be of the lead ient point of. attachment for a lead .wire,

without the necessity of having any portion of the contact extend beyond theou'tline of I the insulator.

, Thebody portion 16 6f the'in'sulator is preferably spacingof the contacts 13 from the mem- Although I have illustrated a specific embodiment of-my invention herein, it willbe apparent that it is susceptible of various. modifications within the scope of the followin claim, an example of such a modification being to make the tubular member 12 of glass,

body of the insulator.

Iclaimz' In-a vacuum tube socket, the combination provided with a plurality so shaped as to facilitate theso or separate fr0m 'the' a'cont-act portion, a body portion adapted to fit snugly between the depending peripheral flanges of theinsulator, and a pair of cars projecting from the body portion for coreferenceto the insulator.

.. EMILIO PAsoUcoL; 

